COMPANY PROFILE - We make engine valve seat inserts.
 That's
nearly all we have done since our founding in
1941 - and we do it better than anyone else
in the world. This isn't a claim we make lightly.
In a time of corporate diversification, we have
chosen to excel in producing the one single
product we pioneered more than 50 years ago.
Since then,
we've grown to become the world's largest
producer of heavy-duty valve seat inserts.
Even after making and shipping more than 400
million, we're still working to improve our
craft. L. E. Jones is the only full service valve seat insert supplier in the world. We can provide cast, wrought, or powdered metal valve seat inserts - whatever best fits our customer's needs. Valve seat inserts are a critical component of any engine. They help maintain proper cylinder compression for proper engine operation, and must withstand extreme heat, stress and corrosive environments. Failure of an insert means downtime for our customers, so we work hard to provide them with products meeting only the highest standards.
* L. E. Jones is the sole supplier of exhaust valve inserts for Cummins, and the sole supplier for Exhaust and Intake valve inserts for Caterpillar. * L. E. Jones Company also supplies Valve Seat Inserts to 100 additional companies, as well as 100% of the American aircraft market.
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At
the L. E. Jones Company, working closely with
customers to improve our products is simply
the way we do business. We call this philosophy
"A Partnership in Quality", and
it's the main reason we take such pride in
our products and what we do.
We
are the sole certified supplier * of Heavy
Duty Valve Seat Inserts for the following
major companies: 
